Circular-flame gas-burner.



Patented May 22, 1900..

H. DARBY. CIRCULAR FLAME GAS BURNER.

(Application filed Aug. 31, 1899.

2 Sheets-Sheet I.

(No Model.)

Mann/gays- 'No. 650,306. Patented May 22, I900.

H. DARBY.

GIRGULAB FLAME GAS BURNER.

(Application mad AuI- 31, 1899.)

(No Model.) 2 Sheets-Shut 2. v

' nu: nonm's vrrzas co.. wuoro-umo" wasnmaron, n a

A V l 2 UNITED STATES PATENT OFFICE.

HENRY DARBY, OF LONDON, ENGLAND, ASSIGNOR TO XVILLIAM CHARLES PUNCI-IARD, OF-SAME PLACE.

CIRCULAR-FLAME GASrBURNER.

' SPECIFICATION forming part of Letters Patent No. 650,306, dated May 22, 1900.

Application filed August 31 1899. Serial No. 729,104. (No model.)

To rtZZ whom it may concern:

Be it known that I, HENRY DARBY, manufacturer, a subject of the Queen of Great Britain, residing at 249 Pentonville road, Kings' Cross, London, England, have invented certain new and useful Improvements in or Belating to Circular 4 Flame Gas-Burners, of which the following is a specification.

Thisinvention relates to circular-flame gasbnrners, novel and striking eifects being produced according to the present invention, the flame having very much the appearance of the present wellknown incandescent gasburner with mantle, although no Bunsen burner is employed and no mantle is used or intended to be used according to the present invention, an incandescent-like mantleless gas-burner beingthus produced.

Referring to the accompanying drawings, in which the present invention is illustrated, Figure 1 is an exterior view, in side elevation, of the gas-burner of circular form constructed according to the present invention. Fig. 2 is a vertical sectional view taken through the middle of this circular burner-4 8., on line 2 2, Fig. 1. Fig. 3 is a horizontal cross-sectional view on line 3 3, Fig. 2; and Fig. 4 is a similar View on line 4 4, Fig. 2, looking downward in both cases.

Similar letters of reference indicate corresponding parts throughout.

A is a gas-inlet pipe, to which the supply of gas is led in any suitable manner. For instance, the lower end of said pipe A may be screwed or otherwise attached to any ordinary gas bracket or chandelier, &c.

A are branch pipes (as in ordinary and well-known Argand burners) by which the gas is supplied to an ordinary Argand circular gas-burner B.

C is an ordinary basket or restrictor of any suitable character which extends from a horizontal plane about three-quarters of an inch below the top of the Argand burner B downward and inward in a conoidal or tapering form, as shown, and terminates at a point about two and one-half to three inches below the top edge of said burner B. (See Fig. 2.)

' D is a horizontal flat rim or ring with downwardly-extending flange D, within which latter the basket C fits and is there held in position by any suitable means, such as the nut C and washer C", (see Fig. 2,) and E E are three (or other suitable number of) inwardly-extending arms which carry the central collar or burner-mount F, which latter; is thus supported concentrically within the restrictor, &c., and this collar F is internally screw-threaded and adapted to have screwed thereinto the metal part B of the Argand burner B, which latter is exteriorly screwthreaded for this purpose, whereby said flanged ring or rim D and restrictor C and burner B are thus firmly and concentrically secured together.

1 H is a cone or hood which is mounted concentrically with the Argand burner B and se cured to the upper side of the said rim or mount Dat a point a little outside of the projecting inner edge D (the object of which latter is hereinafterdescribed) of said mount D, and as said hood extends upwardlyit contracts until above the top edge of the burner B, and then said hood is flared or widened,

out and terminates at a point about threequarters or seven-eighths of an inch above the top of the burner B. (See Fig. 2.) At the lower part of said hood H there is a clear annular space between the exterior of the burner B and the inside of said hood H,which latter, at or near the bottom edge thereof, is provided with a series of apertures H, leadinginto an annular inclosed air-heating chamber X, formed between the outer side of the lower part of the hood H and the jacket I, which latter is provided with a series of outlet-apertures I, located within the interior diameter of the chimney Y, so that when the I latter (which is to be a straight chimney) is mounted in position in the chimney-gallery K a supply'of heated air will thus be led through the outlets I from the annular chamber X in between the inside wall of the glass or other chimney Y and the exterior of the upper part of the hood H, and such supply of heated air is caused to impinge on theexterior of the flame just as same rises above the top edge of the hood H.

M is a vertical central post fixed in or to the Argand burner, and mounted on said support M is the button or flame-spreader N, which latter is located and supported exactly I tral annular passage a, formed inside the H,..and, third,the supply of heated air comllponli gh tin g the gas coming from the Argand be made semitransparent or translucent or of a/hood or cone concentrically arranged (marked Z.)

limits the amount of air which can thus pass toproduce abrilliant light, while the spreader o'r. flame spreadersupported centrally withlevel, or thereabout, with the top edge. of the hood H, as shown in Fig. 2.

In Fig. 2 the approximate shape the flame assumes in burning is shown in dotted lines,

The inwardly-projecting edge D Fig. 2,

rior of the chimney Y which latter air-supply impinges on the exterior of the flame as it rises above the top edge of the hood, substantially as and for the purposes set forth.

2. Th'ecombination with an Argandburner, of a hood or cone concentrically arranged around-the upper part of said burner and ex tending above" the top edge thereof and an annular air-heating chamber X formed around the exterior of the hood to heat the air-supply to the passage 0 exterior of the hood which latter air-supply impinges on the exterior of the flame. as it rises above the top edge of the hood, substantially as and for the purposes led to the flame by three separate annular 'set'forth. w

passages, namely: first, a supply of air is led to-the interior of the flame throngh'the cenburner B, between the post M and the inside wall of said burner B; second, a supply of air. passes up through the annular passage 6, formed between the outside of the burner B and the inside of the lower part of the hood ing. from the annular heating chamber X through the annular space a, formed between the outside of the upper part of the hood H and the inside of the lower part of the chimney Y, impinges on the outside of the flame as the latter emerges above the top of the hood H.

burner B these several air-currents acting in conjunction with the special shape of the hood H and the arrangement of the latter in juxtaposition to the burner B cause the flame N, acting in conjunction with the hood and arrangement of air-currents, causes the flame to. assume a somewhat conical or conoidal form, as indicated by the dotted lines Z in Fig. '2, 'andthe'flame thus has very much the appearanceof the well-known incandescent gas-burner with mantle, and this effect may be further heightened-by having the lower part-of the chimney Y perfectly transparent fromthe bottom up toabout line '3 y, and above this line y y the glass or chimney may even opaque, so that the topmost part of the flame Z is hidden by said non-transparent part of the chimney Y above the line y y.

Havingnow described my invention, what I claim as'n'ew, and desire to secure by Letters Patentfofth'e United States, is

L The combination with an Argand burner,

around the upper part of saidburner and extending above the top edge thereof, a button in said.h0odon a level with the top edge of said hood, a. basket or restrictor C arranged cohcen'trically below said hood anannular inwardly-projecting edge D arranged below the .top edge of-the burner to limit and reguep ljatethe air-supply at this point, and means to admit a supply of air to the passage 0 between the exterior ofthe hoodand the inte- 3 The combination with an Argand burner of a hood or cone concentrically "arranged around the upper part of said burner and ex tending above thetop edge thereof, an inwardly-projecting edge D arrangedjbelow the top edge of the burner to limit and regulate the air-supply on its way to the exterior of the flame and an annular air-heating chamber X formed around the exterior of the hood to heat the air-supply to the annular passage 0 exterior of the hood which latter air-supply impinges on the exterior of the flame as it rises above the top ed ge'of the hood, substantially as and for the purposes set forth.

. 4. The combination with an Argandburner' of a hood or cone concentrically arranged around the upper part of said burner and extending above the top edge thereof, a basket or restrictor 0 arranged concentrically below said hood,an inwardly-projecting edge D ar ranged below the top edge of the burner to limit and regulate the air-supply on its way to the exterior of the flame, and an annular airheating chamberXformed around the exterior of the' hood to heat the air-supply to the passage c exterior of the hood which latter airsupply impinges on the exterior of the flame as it rises above the top edge of the hood, substantiallyas and'for the purposes set forth.

5. The combination with an Argandburner of a hood or cone concentrically arranged around the upper part of said burner and extending above the top edge thereof, a basket or restrictor 0 arranged concentrically below said hood, an inwardl y proj ectin g edge D arranged below the top edge of the burner to limit and regulate the air-supply on its way to the exterior of the flame, and an annular air-heating chamber X formed around the'exterior of the hood to heat the air-supply to the passage 0 exterior of the hood which latter air-supply impinges on the exterior of the flame as it rises above the top edge of the hood, substantially as and forthe purposes set forth. V 6. The combination with an Argand burner,

of a hood or cone concentrically arranged around the upperpart of said burner and ex tending. above the top edge thereof and an annular air-heating chamberX formed around the exterior of the hood to heat the air-supply to the passage 0- exterior of the hood which latter air-supply impinges on the exterior of the flame as it rises above the top edge of the hood, substantially as and for the purposes set forth.

7. The combination with an Argand burner of a hood or cone concentrically arranged around the upper part of said burner and extending above the top edge thereof, an illwardly-proj ecting edge D arranged below the top edge of the burner to limit and regulate the air-supply on its way to the exterior of the flame and an annular air-heating chamber X formed around the exterior of the hood 0 exterior of the hood which latter air-supply impinges on the exterior of the flame as it rises above the top edge of hoodsubst-antially as and for the purposes set forth.

8. The combination with an Argand burner of a hood or cone concentrically arranged around the upper part of said burner and extending above the top edge thereof, a button or flame-spreader N supported centrally within said hood on a level with the top edge of said hood, a basket or restrictor 0 arranged concentrically below said hood, an inwardlyprojecting edge D arranged below the top edge of the burner to limit and regulate the air-supply on its way to the exterior of the flame, and an annular heating-chamber X formed around the exterior of the hood to heat the air-supply to the passage 0 exterior of the hood which latter air-supply impinges on the exterior of the flame as it rises above the top edge of the hood, substantially as and for the purposes set forth.

9. The combination with an Argand burner ,of a central collar F adapted to have said burner screwed therein, arms E on ringD supporting said collar, a restrictor O butting with said ring D and held in position by a nut on the gas-inlet pipe leading to said burner, an inwardly-projecting, edge D on said ring D, a hood H mounted on the upper side of said ring D and extending above the top of the burner, an annular jacket I mounted exteriorly of said hood H and forming an annular air-heating chamber X, air-admission openings H leading through the lower part of said hood H into said chamber X, and a series of outlet-openings 1 leading from said chamber X into the space 0 between the interior of the chimney Y and the exterior of the upper part of the hood H substantially as and for the purposes set forth.

10. The combination with an Argand burner of a central collar F adapted to have said burner screwed therein, arms E on ring D supporting said collar, a restrictor 0 but ting with said ring D and held in position by a nut on the gas-inlet pipe leading to said burner, an inwardly-projecting edge D on said ring D, a hood H mounted on the upper side of said ring and extending above the top of the burner, a button or flame-spreader N supported cpntrally within said hood on a level with the top edge of said hood, an an nular jacket I mounted exteriorly of said hood 7 H and forming an annular air-heating cham ber X, air admission openings H leading through the lower part of said hood H into said chamber X, and a series of outlet-openings 1 leading from said chamber X into the space 0 between the interior of the chimney Y and the exterior of the upper part of the hood H, substantially as and for the purposes set forth.

11. The combination with an Argand,

burner, of a hood or cone concentrically arranged around thenpper part of said burner and extending above the top edge thereof, a basket or restrictor 0 arranged concentrically below said hood or ring D having a peripheral flange fitting over said basket or restric tor, and an inwardly-projecting edge D extending within said hood and arranged concentric to the burner but spaced therefrom,

below the top edge of the burner to limit and regulate the air-supply on its way to the exterior of the flame, substantially as and for the purposes set forth.

12. The combination with an Argand burner, of a hood or cone concentrically ar-- HENRY DARBY;

\Vitnesses:

H. D. JAMEsoN, A. NUTTING. 

